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(No Model.)

W. HODGSON & J. 0. BROWN.

GAS BURNER.

No. 430,853. Patented June 24, 1890.

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- UNITED STATES PATENT OFFICE.

WILLIAM IIODGSON, OF NEW YORK, AND JOHN G. BRO\VN, OF BROOKLYN, NEXV YORK.

GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 430,853, dated. June 24, 1890. Application tiled February 17, 1890. Serial No. 340,670. (No model.)

To all whom it may concern.-

Be it known that we, \VILLIAM l-IODGSON, of the city, county, and State of New York, and JOHN C. BROWN, of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Gas-Burners, of which the following is a description, reference being had to the accompanying drawings.

This invention relates to that class of gasburners that are provided with automatic or self-closing valves, whereby it the gas-flame be extinguished or put out otherwise than by turning the valve immediately controlling the I 5 supply to the burner the automatic valve will close and prevent the escape of the gas.

The invention relates particularly to burners of this kind that are provided with a spring or other elastic or readily contracting and expanding piece, which is fixed at one end to the burner and arranged in proximity to the flame-orifice thereof, and at the other or movable end is so attached to a valve in the burner that when it moves the valve will be 2 5 caused to open or close.

Our invention has for its object to arrange the actuating-spring and the parts adjacent to it so that the heat of the igniting-flame will be concentrated upon the spring, and thereby cause it to act quickly; as also is it our object to protect or shield the spring, so that it and its connected movable parts will not become clogged by soot, dust, particles of burned matches, and other like matter.

3 5 To this end our invention consists of a burner provided with an' elastically or ex pansibly acting valve strip or spring, which spring is arranged opposite to or above the flame-orifice of the burner and is surrounded by a casing or llOOd-' This hood is open on the side toward the flame, and it serves to concentrate the heat of the lighting-flame upon and to confine the heated air to the expanding strip or spring in order that the spring will be quickly heated, and the valve attached to it is promptly opened that the gas may flow from the burner immediately after the application to the burner-tip of an igniting-flame.

In the drawings, Figure 1 is a central sec tional view of a burner provided with an aumatieally-acting valve constructed and operated in accordance with our invention, Fig.

2 isan elevation view of the same from the right-hand side of Fig. 1. Fig. 3 is an enlarged View of the contracting and expanding spring used to operate the valve.

Referring to these views in detail, A represents the burner, which may be of any desirable material and form.

Bis the burner-tip, which in the present case is shown slotted to produce a flat or fishtail flame.

O is the hood secured to one side of the burner, with its side next toand just above the burner-slot left open, and it extends down the side of the burner to below the valvespindle D.

E is the expansible spring, which is secured at one end by the screw F to the sides of the hood, and is coiled into spiral form around its upper end, while its lower end extends to and is connected with the end of the valve-spindle. This spindle carries the valve G and extends through the burner, and at its other 7 5 end has a knob H, by which the valve may be operated independently of the spring E,it' desired. This knob maybe threaded upon the spindle, if desired, in which case the position of the valve or its seat may be adjusted or the valve held continuously open.

The spring E is preferably made of two metallic strips of diiterent expansible capacitysuch, for instance, as steel and copperI indicating the copper strip and J the steel strip. By this construction of the spring a Wide range of movementof its movable end is made possible, and also the spring is made to act quickly under the influence of heat. Other forms of strips or springs are, however, practical, and various combinations of metals may be employed to produce a compensating action. So, too, a spring of other kinds of metal or alloy of metals may be used. The various possible forms of springs or strips, 5 whether of one metal or a combination of metals, will depend upon their action, sensitiveness to heat, and the range of movement desired.

Howsoever the spring or strips be shaped, I00 constructed, and attached to the burner and valve, and in whatever way its elasticity or expansibility be availed of to move the valve,

it is essential to our improvement that a portion of the spring be so placed that an ignit ing-flame applied to light the burn er will heat the spring, and that the spring be hooded or inclosed by a casing that will serve to refiect the heat of the igniting-flame upon the spring and confine about it the heated air.

The form of hood We have shown is Well adapted to be used With the form of spring illustrated; but obviously the hood may be otherwise shaped to accord with the form and arrangement of springs of other shapes. By these means We secure an automaticallyopening and closing gas-burner that is thoroughly practicable. It is very quick to open under the heat of a match or taper flame applied to its tip to ignite the gas, and no more time is necessary to cause its valve to open than is ordinarily consumed in lighting a burner of the common bracket or chandelier when the main thumb-valve is located at a short distance from the burner. The movable parts, and particularly the valve-connections, are protected against accident and against the collection upon them of dust, particles of burned matches and soot, and hence their Working at all times is insured. In case, however, through long use or accident, the springbecomes injured or inoperative, the valve maybe opened by the thumbnut on its spindle, or it may by the same meansbe held continuously open and the burner used like an ordinary burner.

the valve G, and the spiral spring E, arranged Within the hood opposite the opening thereof and attached at one end to the valve and fixed at its other end, whereby the heat of a flame applied to the burner-tip is concentrated upon the exposed portion of the spring and causes the spring to contract or expand to open or close said valve, as and for the purpose set forth.

3. In combination With a gas-burner, the hood 0, having an opening above the flameslot, the expansible spring E, arranged Within the hood and opposite the opening thereof and having its movable end attached to the stem D of valve G, said valve-stem extending through the burner and being provided with a knob H, as and for the purpose set forth.

WVM. I-IODGSON. JOHN 0. BROWN. Witnesses:

FRANK B. MURPHY, ERNEST HOPKINSON. 

